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add protocols option to WebSocket constructor #59

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add protocols option to WebSocket constructor #59

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8 changes: 7 additions & 1 deletion index.bs
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Original file line number Diff line number Diff line change
Expand Up @@ -209,7 +209,7 @@ enum BinaryType { "blob", "arraybuffer" };

[Exposed=(Window,Worker)]
interface WebSocket : EventTarget {
constructor(USVString url, optional (DOMString or sequence<DOMString>) protocols = []);
constructor(USVString url, optional (DOMString or sequence<DOMString> or WebSocketInitDict) protocols = []);
readonly attribute USVString url;

// ready state
Expand All @@ -233,6 +233,10 @@ interface WebSocket : EventTarget {
attribute BinaryType binaryType;
undefined send((BufferSource or Blob or USVString) data);
};

dictionary WebSocketInitDict {
sequence<DOMString> protocols = [];
};
</xmp>

Each {{WebSocket}} object has an associated <dfn for="WebSocket" lt="internal-url">url</dfn>, which
Expand Down Expand Up @@ -330,6 +334,8 @@ It can have the following values:
"{{SyntaxError}}" {{DOMException}}.
1. If |urlRecord|'s [=fragment=] is non-null, then throw a "{{SyntaxError}}" {{DOMException}}.
1. If |protocols| is a string, set |protocols| to a sequence consisting of just that string.
1. Otherwise, if |protocols| is a dictionary, set |protocols| to
|protocols|["{{WebSocketInitDict/protocols}}"]
1. If any of the values in |protocols| occur more than once or otherwise fail to match the
requirements for elements that comprise the value of
\`<a http-header>`Sec-WebSocket-Protocol`</a>\` fields as defined by The WebSocket protocol,
Expand Down
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